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  1. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Then we focus on the P1dB simulation first:

    If my LNA is operating at 60 GHz, should I put frf1 = 60 GHz for my hb analysis?
  2. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Okay, so right now, I have two testbenches for the same LNA circuit, one for P1dB sim, another for IP3.

    for P1dB, I've set my frf1 variable in ADE as 60 GHz and for IP3, frf1=59.5 GHz, frf2=59 GHz...
  3. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Alright, thanks for the clarification, then I'll leave my IP3 plot as it is shown here.

    BTW, If I set the frequency for P1dB plot at 60 GHz, will the P1dB curve contradict with my current setup...
  4. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Thanks

    I've tested with other values by playing with other harmonics within the bandwidth in the direct plot form, and the results will differ, so may I know how can we decide which harmonics to...
  5. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Okay, I've chosen f1=59.5 GHz and f2=59 GHz and run the hb analysis. Then at the main form, I chose 59.5 GHz as 1st order freq and 60.5 GHz as 3rd order freq, the result is as shown:

    155717

    May...
  6. Closed: Re: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    My bandwidth is (65.97-52.17) GHz = 13.8 GHz

    May I know how to determine whether OIP3 falls into bandwidth?
  7. Closed: How to determine tone 1 and tone 2 in ADE IIP3 simulation (hb) for a 60 GHz LNA?

    Hi, rookie post here, the LNA I'm simulating in Cadence ADE is operating at a carrier frequency of 60 GHz. I'm using hb analysis.

    I'm aware of the formula 2f1 - f2 = fc, but:

    1. Is there a...
  8. Closed: Problems in Verifying Silterra Library Cells using Calibre

    Hi, I'm using Calibre in Cadence Virtuoso to verify my layout using Silterra's PDK. I have acquired all four DRC and LVS/PEX runset and header TXT files, but all of them could not be loaded inside...
  9. Replies
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    309

    Closed: Re: W/L of pMOS and nMOS of CD4007 Chip.

    Did some quick digging and found this, your answer should be in page 7: https://people.rit.edu/lffeee/CD4007_SPICE_MODEL.pdf

    PMOS:

    W = 360 um, L = 10 um

    nMOS:

    W = 170 um, L = 10 um
  10. Closed: Error and Questions related to Calibre 2015 in Cadence

    Hi, the PDK I currently use supports Calibre, but their header and runset file for DRC and LVS are all in TXT format (4 files in total), may I know are text files supported by Calibre?

    Also, when...
  11. Closed: Re: Simulation discrepancies between Sonnet (standalone) and Sonnet Cadence Interface

    So hypothetically, if I remove the feedlines in SCI (only the oval shapes are left), will the simulation results be the same with my previous simulations in Sonnet?




    Speaking of which, these...
  12. Closed: Re: Simulation discrepancies between Sonnet (standalone) and Sonnet Cadence Interface

    there are arrows in all inductors in xgeom, in fact, all of them are synthesised by your spiral inductor assistant and come with the arrows by default.

    154839

    Besides, in SCI, I've taken...
  13. Closed: Re: Simulation discrepancies between Sonnet (standalone) and Sonnet Cadence Interface

    The feedlines are the same as I imported their gdsII from Sonnet.

    not sure about the de-embedding settings and different equations, may I know where to check it?

    (edit: the equations I used are...
  14. Closed: Simulation discrepancies between Sonnet (standalone) and Sonnet Cadence Interface

    Hi,

    As per title, I am simulating four custom inductors that'll operate at their target inductance at 60 GHz. All simulations are satisfactory when using Sonnet by itself, however when I...
  15. Closed: Questions in manually creating substrate files for Sonnet Cadence Interface

    Hi everyone,

    I've successfully simulated several inductors in Sonnet and is moving on to re-simulate them using Sonnet Cadence Interface and integrate them into my LNA in Cadence Virtuoso for...
  16. [SOLVED]Closed: Re: [DISCUSSION] Maximum ram usage for Sonnet/HFSS simulation

    Agreed, especially when I have only 4GB of soldered RAM on my laptop, I had to configure my simulation to output relatively accurate results while using just below my RAM limit. Compromises had to be...
  17. [SOLVED]Closed: Re: [DISCUSSION] Maximum ram usage for Sonnet/HFSS simulation

    Wow, that's an impressive amount of RAM, and even that was still not enough for you! May I know how large is the structure?
  18. [SOLVED]Closed: Re: [DISCUSSION] Maximum ram usage for Sonnet/HFSS simulation

    Thanks for the reply! I'm aware that I can reduce RAM usage by using conformal mesh and increase the size of the mesh, I'm just curious whether anyone here had hit high RAM usage for their projects,...
  19. [SOLVED]Closed: [DISCUSSION] Maximum ram usage for Sonnet/HFSS simulation

    Hi, I'm just curious, what are your maximum used RAM for the projects you've been simulated for either/both software?

    Is it possible to achieve extreme RAM usage, like 64 GB or above for a single...
  20. [SOLVED]Closed: Re: Questions for Dr. Mühlhaus Spiral Inductor Assistant for Sonnet

    Say I created four single-turn round (stadium) inductors to operate at 60 GHz, all within 68 pH to 104 pH, and I've simulated them with Sonnet, they somehow reached my targeted inductance with decent...
  21. [SOLVED]Closed: Questions for Dr. Mühlhaus Spiral Inductor Assistant for Sonnet

    Hi, I'm designing custom inductors using Spiral Inductor Assistant for Sonnet. Below are my questions:

    1. For "round differential" inductors, if i'm creating a single-turn inductor, why does the...
  22. [SOLVED]Closed: Re: Cadence Spectre CIW Warning and Error (ADE-3023)

    UPDATE:

    I've somehow solved the problem.

    What I did:

    1. In .bashrc, I've typed the wrong directory at the MMSIM lines, so I've changed the part as shown below (some paths may be redundant):...
  23. [SOLVED]Closed: Re: Cadence Spectre CIW Warning and Error (ADE-3023)

    If I enter "which spectre", the terminal returned:


    [JLHW@jlhw opt]$ which spectre
    /usr/bin/which: no spectre in...
  24. [SOLVED]Closed: Re: Cadence Spectre CIW Warning and Error (ADE-3023)

    /opt/cadence/MMSIM151/tools/spectre
  25. [SOLVED]Closed: Cadence Spectre CIW Warning and Error (ADE-3023)

    Hi, I, a rookie in Linux environment, have installed Cadence IC617 on CentOS 7.6 and was going to simulate an analogue IC schematic.

    When I launched ADE L, the command interpreter window (CIW)...
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